Abstract: The invention discloses an armchair (1) with variable position comprising a support structure (2) having a post (3) defining a first vertical axis (Z), a first frame (8) comprising a first pivot (9) defining a second horizontal axis (X), a second frame (12) swinging at one end (11) around the first pivot (9), thrust means (14) connected to the first frame (8) and acting against the end (11) of frame (12) to resist its swinging movement around the axis (X), a seat (10) supported by the first frame (8) and a backrest (13) supported by the second frame (12). The seat (10) is connected at least to the first frame (8) through first elastic means (15) adapted to allow a rotary translatory motion to the seat (10). The backrest (13) is connected to the second frame (12) through second elastic means (22) to allow a further rotary translatory motion.

Abstract: A chair with variable pitch having a frame set to rest on the floor, at least one central element that creates a substantially horizontal longitudinal axis supported by the frame, a seat supported by the central element, one pair of first stiles parallel to each other and set at the ends of the central element, and a backrest that has its top connected to the first stiles through first flexible couplings and its bottom connected to the seat through a second flexible coupling. The seat is connected to the central element through swivel means that allow the planar rotary-transverse movement of the seat, combined with a rotary rocking movement of the backrest around a longitudinal axis created by the flexible couplings.

Abstract: A folding chair (1) which consists of a seat (5) foldable; two pairs of struts, front (2) and rear (3) which converge on and connect to the chair back (6) functioning as legs and being connected to each other respectively by a rear horizontal cross-bar (9) and a front horizontal cross-bar (8). The rear struts (3) are formed by two tubes (31, 32) slidable one inside the other, the internal tube (32) being fixed by at least one connector (7) to the top of the front strut (2) in correspondence with the chair back, the external tube (31) being fixed to its twin by said rear cross-bar (9). The partial extraction of the internal tube (32) from the external tube (31) occurring when the chair is lifted by the back (6) allows the rotation of the seat around the axis of said rear cross-bar (9).